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A numerical analysis of slab heating characteristics in a walking beam type reheating furnace

机译：步进梁式加热炉板坯加热特性的数值分析

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摘要

Numerical analysis of slab heating characteristics in a reheating furnace has been accomplished using FLUENT, a commercial software. The phenomena in the furnace are periodically transient because the slabs are transported toward a rolling mill with every time interval controlled. Unsteady calculation has been performed to obtain a periodically transient solution. A User-Defined Function (UDF) program has been developed to process the movement of slabs because FLUENT cannot handle the movement using its default functions. When the mean temperature of a slab emitted to the rolling mill does not change, calculation is considered to have converged and is stopped. This convergence criterion is appropriate for achieving an analytical solution. With the boundary and initial conditions given, over 55 new slabs are inserted to get a converged solution. Skid posts and beams are included in the calculation because they disturb radiation heat transfer from hot combustion gas to the slabs. This article examines what the slabs experience in the furnace before they are emitted to the rolling mill and whether a slab emitted to the rolling mill satisfies the required slab conditions, such as target temperature and skid severity.
机译：使用商用软件FLUENT已完成了对加热炉中板坯加热特性的数值分析。炉中的现象是周期性瞬变的，因为在每个时间间隔受控的情况下，将板坯运往轧机。已经进行了非稳态计算以获得周期性的瞬态解。由于FLUENT无法使用其默认功能来处理移动，因此已经开发了一个用户定义功能（UDF）程序来处理平板的移动。当排出到轧机的板坯的平均温度没有变化时，认为计算已经收敛并停止。该收敛标准适合于实现分析解决方案。在给出边界和初始条件的情况下，插入了55多个以上的新平板以获得收敛解。滑柱和横梁被包括在计算中，因为它们会干扰从热燃烧气体到板坯的辐射热传递。本文研究了板坯在送入轧机之前在炉中的经历，以及板坯是否满足要求的板坯条件，例如目标温度和打滑严重性。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第20期|P.3855-3861|共7页
  • 作者

    Sang Heon Han; Daejun Chang; Chang Young Kim;

  • 作者单位

    Division of Ocean System Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    rnDivision of Ocean System Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea;

    rnEnergy Research Department, Research Institute of Industrial Science and Technology, 32 Hyoja-Dong, Nam-Gu, Pohang City, Gyeongbuk 790-330, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    reheating furnace; slab heating characteristics; turbulent combustion;

    机译：再加热炉板坯加热特性湍流燃烧;

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